Doubler for sheet metal.



PATENTED MAY 29g 190e.

NORTN, "*D`GUBLBR FOR SHEET METAL.

PPLIGA'IIN FUJBD APR.8,1905.

E. NORTON.

DOUBLBR POR SHEET METAL. A'P'PLIGATION FILED APR-8.1905.

WITNESSESI .PATENTED MAY 29, 19de.

4 SHEETSrSHEBT 2y INVEINTUR A'r'ronm E1s PATENTBD MAY 29. 1906.

E. NURTGN. DUBLBR FR SHEET M ETAL.

,@.PPLIUATION YILED APR. 8. 190.5.

4 fSHEETS-SHBET S.

| l l x l l f u n x MMM . PATENTED MAY 29, 1906.

E. NORTON. DOUBLBR FOR SHEET METAL.

APLIOATION FILED APB. 8.1905.

4 SHEETS-SHEET 4.

lNvEzN-ron;

` A14-runways.

WBIIESSES: mam/JWM after;

"nlanylorins ,which my invention may as Y pleted; Fig.v 2, a similar View showing the` ENQ bled sheet reafdy to vbe ejected Fig. 3, an. eno.

' nnnfrn nonies., snr

no. earner. symmetrie" are inerti-int. lilatenled Mey 29, 1906.

Application tiled April 8,1265. Serial No. 254.617.

4To all whom it mctycolwernl:

Be itknown that l, EDWIN Nonron, a citi zen ofthe United States, residingl in the nity of New York, in the county of New Yerlr. and Stato of New York',`haye invented new and useful Improvements in Doublers ior Sheet Metal, of Wliieli the following is a speoiii tion. c My invention relates to donhlers for sheet metal; and its object is to provide means for gagging the sheets, so that they' shell have theireenters directly in line with the `floubling plunger Ior blade, for securely olainning the sheets When in said position, so that t ler enters will not slip on seid plunger, lor "doubling the sheets with e niinimnrn of AoWer end of strain on them, for presein the elves of the sheets into close contee-t with each' other, for nieohenioelly rioting the `double sheets, and for otherwise improving jdoubling-rneohiijies, "as pointed ont herein- Referring to the' drawin 's which iieeoinf pany this sp'eorieetion and orin a part lief oi, Figure l isa slde elevation of one of the sume, parte being shownin vertical section, 'the doubllng operation being partly Coin doubling operation completed end 'the dou elevation showing in dotted lines the doubled sheetbein' ejected; Fig. 4a top plan View, partly loro ren away; Fig. 5, a side View or thebeiidinplunger; Fig. 6, an end vieifv of the same; Fig. 7, an end View of the @lenining `plunger or blade;- Fig. 8, a top View of the saine; Fig. 9, a side View' of one of the gages; Fig. l0, e Vertical section oi one oi the guides therefor, and Fig. l1 e side View of the ejector.`

In the drawings, lV represents the base or floor on which supports the larger part of the mechanism, and 2 2 are standards orv side lates resting thereon.A The sheets o be ent are'fed on top of the lioor or bese l. and betvireenthe standards`2. j

At opposite sides of the ,vertical plane com neeting'the Vertical Center lines of the stsndards 2 are two pairs of trsolrs Il, inelined ip- Warclly toward'the said plane, but lyin r he Ilow the floor. l Slidable onthe ripper suriaees of these tracks are the foin" gages Il, eeeh here ing.,an'niiwardly-tnrned gage linger or lue; 5 `and a downwardly-projecting ear t, slidi v "inthe groove '.7 ofthe trael on nfln'eh it sin llie ,genres on the saine side/of said plane Constitutai a pair and ere eonneoted together by the rofl 51E, Wllieh extends tl'irongh eyes in the eers (i. of :i link il, the opposite ends ofthe links being sonne `ed at opposite ends oli the lever 10, mounted at its center on the roelshaft 1 1, which enten ds tliiough one of the standards 2iand is l2.A l' hen the gages are farthest from the said plane, 'the upper ends oll the gage-fingers are just below' the floor l., as shown in full,

lines on liig. 1. so that a sheet may be shoved ,l on. the treoteil ling-ers. After the sheet has been so shoved the rotation of the shaft ll in the proper rlireetion omis :he ,gages to'asoend their tree/lis 23, 'the ers et once Coming above the floor in position ol' thi sheet. lis the 'lingers are equally olistnnt from said pleno and as the ieohanisin wl'iieh operates opposite pairs of gages are alike, it eleii' that when the lingers 5 engege leave its center 'exactly in the said plane. A. plete i3 is shown on ii'ig. 2 clamped by the` gages, which are shown in dotted ines: Directly below the said plane is e hydraulic eylinil 'n ger Whioh travels in the guides 16. The plunger has a rounded upper edgeronnded, as sliovifn, and downwardlydivergent sides and stands when inactive with its .seid edge below the lloor l, es shown in dotted lines in 9e Fig. l. .its

seid plane. i

0n the plate or platform 17,connecting` the upper portions ol. the standards or lions-li longitudinal Center lies in the ings 2, is the hydraulic. cylinder 18, Whose 95 pistc'irerod i9 is seoured 'to the tofpof the elmnping-plate 2U, Consisting of' a vertical plate n'ioveble. irl the plane above mentioned end havingits ends traveling in the guides 21 in the said housings.

led the bottoni with openings inv j are secured bearing-blools 23 for the shafts 2li, to which. are secured the pendent bending dies and javi/s 25. When inactire, the outer sides of the jaws are vertically Io 5 snpperted against the side of: the openings y The said jaws extend entirely across from one housing to the other, the shafts ly-` ing; i:iarellel to and at equal distanoes from noviderl with handle or hand-Wheel` 65 riool' to n, position. between the 17e-,7o

to engage the edges 7 opposite edges oi sheet the latter will, So

: i4, whose piston supports t 1e plum, 8 5

To eeeh rod El is oonneoted one end 6o The holisings 2 areroo the said plane and the opposing faces ol the no jews iorining a Wedge-shaped opening correL spending to the shepe of the bendingplunger 1 Y 15. The lower ends of these faces are rounded to form a guide for the sheets as they are pressed up between the jaws and to reduce the friction and strain on the sheets. The rock-shafts 24 are provided with the arms 26, which diverge upwardly, their upper ends being connected by the links 27 to the pistonrod 28, which works in the hydraulic cylinder 29, su ported on the bracket 30 at the side of one o the housings.

31 is an inclined hydraulic cylinder having its piston-rod 32 extending toward the said plane, which it may intersect at the floor-line 1. The upper end of the piston-rod 32 has the shoe or rest 33 to support the doubled sheets after the jaws have released them.

The shoe normally rests as shown in full lines in Fig. 2 and supports the sheets as shown in dotted lines thereon.

34 represents a horizontal hydraulic cylinder having its piston-rod 35 provided with the fork 36, which engages the edge of the doubled sheet as it stands on the shoe 33 and pushes it endwise from between the jaws 25.

The operation is as follows: The gage-fmgers 5 and the bending die or plunger 15 lie below the level of the floor, as shown in full lines on Fig. 1, and the shoe 33 is at its lowest osition, as shown in full lines on Fig. 2. The jaws 25 are open, as shown in full lines on Figs. 1 and 2, and the clamping-plunger has its bottom edge spaced above the floor Ul t enough to allow a sheet to be shoved beneath it, as shown in dotted lines on Fig. 1. The fork 36 is retracted from between the jaws 25, as shown in full lines on Fig. 3. A sleet 13 (shown in dotted lines on Fig. 2) is fed on the floor 1, so as to be between the fingers 5 of opposite pairs of gages. The wheel 12 is operated to clamp and center the sheet, as before described. The plunger 15 and the clamp 2O are now operated so as to clamp the sheet therebetween. The plunger continues to advance, while the clamp 20 retreats at an equal pace to keep the sheet firmly clamped. The sheet is pushed by the lunger, which is the male die, between the jaws 25, which constitute the female die, and takes the angular shape shown in full lines in Fig. 1. When the bend in the sheet reaches the upper ends of the jaws 25, the plunger 15 commences to descend and the cylinder 29 is supplied with fluid to cause the jaws 25 to move toward each other. The jaws at once clamp and pinch tightly the bent or doubled edge of the sheet, and the clamping or shaping action of the jaws 25 closes the halves of the sheet together as the plunger 15 retires. After the plunger has sunk outof the way the shoe 33 is advanced to su port the doubled sheet just rior to itsre ease from the jaws 25. The ork 36 is then advanced to shove the sheet endwise from between the jaws, as shown in dotted lines in Fig. 3. In the meantime the gages are retired, and after sence? the action of the fork 36 the shoe is lowered, when all the parts are ready for another cycle of said operations.

Having described. my invention, I claim- 1. In a doubling-mill for sheet metal, a feeding-floor, D n to be beneath said floor to permit the sheets to be fed thereover and between which gages the sheets are fed, means for causing t-he gages to project above the floor and travel toward each other at equal speeds.

2. In a doubling-mill for sheet metal, laterally-movable female dies, a male die, coperative therewith, and a clamping member operating in conjunction with the male member to clamp the sheets therebetween at the comi mencement of the bending operation.

3. In a doubling-mill for sheet metal, laterally-moving female dies, a male die coperative therewith, and a non-bending clamping member movable to engage the sheets on the side opposite the male die, and means for causing the latter and the said member to move together during the bending operation.

4. In a doubling-mill for sheet metal, a female die composed of movable sections, a male die arranged to enter between said sections, means for moving the sections of the female die toward each other as the male die retires and means located between the sides of the female die and acting in conjunction with the male die to clamp t e sheets.

5. In a doubling-mill for sheet metal, a female die composed of movable sections, a male die arranged to enter between said sections, means for moving the sections toward each other as the male die retires so as to clamp the doubledsheets between said sections, and means independent of the dies for supporting the doubled sheet after the male die retires.

6. In a doubling-mill for sheet metal, a female die composed of movable sections, a male die arranged to enter between said sections, mcans for moving the sections `toward each other as the male'. die retires so as to clamp th(` doubled sheets between said sections, meuns for supporting the doubled sheet after the male die retires and means for ejecting the sheet after being releasedy from the said sections.

7. In a doubling -mill for sheet metal, laterally-movable female dirs, a pair of plungers to engage opposite surfaces of a sheet, means to move the plunger-sl in th\rsa-ie direction after said engagement, one plunger constituting a male die coperative with the female die, the remaining plunger passing beyond the working faces of the female dies at the `close of the bending operation'.

8. In a doubling-mill for metal sheets, dies for bending the sheets double, and means for ejecting the doubled sheets from the dies in substantially a prolongation of the planes which they include in the dies.

gages normally retracted so as IOO TIO

IIS

MMMMW 9. Ina. duubiugmlil for shew mmm, wlw shaw@ amd means for moving the Same below tical dies for bauiug th@ sheets :and n. Sup

port for the sheets movble beneath um saune Il mm1@ diie. y atexfthebendjng operation and im() 1th@ path j; Signed at New York city this 1st day of 5 of 011e of the dies alftm the mte img t-red February, 1905.

from sai path.' Y 1U).y In a doublingmil! folsheet metal, fa 1 male dies, a male die copemiv hmrewth, Wl'mamscs: means for retracting the male die @fmt the J. GALLWHZ, 1ro bending operation, a suppmt for than doubled "WM, L. P1 EROE.

EDWIN NORTON.

the doubled sheet :after the retraction vf the 

